265results about How to "Improve insecticidal efficiency" patented technology

The invention relates to a preparation method of a leaf vegetable insecticide. The preparation method comprises the following steps: adding 10-15kg of flos daturae, 8-10kg of aconite, 6-8kg of felwort, 8-12kg of coptis chinensis, 15-20kg of croton, 10-15kg of radix stemonae, 15-20kg of lithospermum and 14-18kg of thunder god vine into 200-300kg of water; boiling by high fire and decocting by soft fire till about 150-200kg of liquid medicine is left; filtering the liquid medicine; grinding 4-5kg of toad skins to fine powder and adding the fine powder to the liquid medicine to be mixed; after cooling to room temperature, adding 0.8-1kg of acetamiprid and 0.8-1kg of fipronil to stir and mix. The preparation method of the leaf vegetable insecticide provided by the invention takes the decoction decocted by traditional Chinese medicines as a main material and acetamiprid and fipronil as auxiliary materials, so that insects are efficiently killed and prevented with the kill ratio over 95%; the vast majority of the insecticide is traditional Chinese medicines, so that the insecticide is green and environment-friendly and free from pollution to the environment and crops.

The invention discloses a pest control system for agricultural product planting. The system comprises insecticidal lamps connected to controllers for controlling working conditions of insecticidal lamps, wherein the controllers are connected to a central processing unit which is also connected to an image collector, a database, a sound wave collector and a smell sensor, meanwhile, the central processing unit is connected to clients through a first wireless communication module. In addition, the controllers are also connected to at least three types of insecticide sprayers, wherein the spraying coverage of the insecticide sprayers completely includes planting areas of agricultural products. The pest control system is capable of real-timely monitoring the condition of insect attack on agricultural products. Once insect pests appear, the system can quickly judge the types and quantities of pests and choose the most effective way to exterminate the insect pests, thereby improving the efficiency of wiping out insect pests and reducing the consumption of labour power.

The invention discloses a day-night dual-purpose disinsectization unmanned aerial vehicle and relates to the technical field of aircrafts. The day-night dual-purpose disinsectization unmanned aerial vehicle comprises an unmanned aerial vehicle body and a disinsectization device, wherein the unmanned aerial vehicle body comprises a fuselage, a flight device and an undercarriage, the disinsectization device is arranged at the bottom of the fuselage and comprises a supporting plate and a bottom plate, the supporting plate is connected with the undercarriage, a trap lamp is arranged on the supporting plate and is formed through combining a visible daylight lamp tube and an ultraviolet lamp tube, a trap bottle is arranged on the bottom plate, an inner container is arranged inside the trap bottle, gas scattering holes are formed in the inner container, an insect attractant is arranged in the trap bottle, the outer side of the supporting plate and the outer side of the bottom plate are wrapped with high-voltage wire meshes, and the wire meshes have the pore size of 1mm. The disinsectization unmanned aerial vehicle can be used in both daytime and nighttime and is obvious in disinsectization effect, thereby being worthy of popularization.

The invention discloses a veterinary compound anti-parasitic injection and a preparation method thereof, which belong to the field of veterinary medicaments. The veterinary compound anti-parasitic injection comprises ivermectin and praziquantel serving as active ingredients. The preparation method comprises the following steps of: 1) dissolving the ivermectin and the praziquantel in two or more organic solvents with stirring; 2) adding an antioxidant and a local pain killer; 3) continuously adding the organic solvent according to a formula. The anti-parasitic compound preparation provided by the invention has the advantages of wide antibacterial spectrum, high parasite killing efficiency and high stability and overcomes the defect of difficult injection of the injection suspension formulation, so that the ideal anti-parasitic compound preparation which is easy to apply and prevent and control zooparasite mixed infection is provided for veterinary clinical use; and the injection is particularly suitable for treatment and prevention of the mixed infection of various in-vivo and in-vitro parasitic diseases of animals such as pig, sheep and the like and has high popularization value.

The invention discloses vacuum nitrogen-charging and fumigating disinfection equipment and method. The equipment comprises a nitrogen generation unit, a humidifier, a vacuum pump, a disc heating type heater, a three-in-one sample injector, a disinfection box and a circulation fan, wherein the nitrogen generation unit is connected with the humidifier; the humidifier and the vacuum pump are connected with the three-in-one sample injector through a first pipeline; the disc heating type heater is connected with the three-in-one sample injector through a second pipeline; the three-in-one sample injector is also connected with the circulation fan connected with the disinfection box; the disc heating type heater is also connected with the disinfection box; a solid-liquid fumigant push rod is arranged in the three-in-one sample injector and connected with a pipeline plug located on the three-in-one sample injector. With the adoption of the vacuum nitrogen-charging and fumigating disinfection equipment and method, the nitrogen insecticidal efficiency can be improved, effective sterilization can be realized, the fumigating disinfection efficiency can be improved, the fumigant consumption can be reduced, and hazards caused by chemical fumigants to human bodies and environments can be avoided.

Pesticidal blanket comprising a fibrous sheet without insecticide and a net structure attached thereto, where the net structure is at least partly impregnated with an insecticide.

The invention relates to compound preparation and protein molecule carrier, and specifically discloses a fluorescent star polymer, a preparation method and applications thereof. Perylene derivatives and analogs thereof are taken as the fluorescent core of the fluorescent star polymer. Fluorescent star polymers with amino acid characteristic groups in different generations are prepared through a divergence method. Because the exteriors of fluorescent star polymer molecules carry special amino acid groups, the fluorescent star polymer molecules can be easily recognized and swallowed by live cultured cells. Moreover, through non-covalent bonds, fluorescent star polymers can be bonded with protein molecules with negative charges or positive charges to form stable complexes. The provided fluorescent star polymer can be used as a carrier, can protect and carry exogenous protein molecules, and can successfully introduce exogenous protein molecules into live cultured cells. By feeding the insects, insect-killing protein molecules can be introduced into the cells of live insects by the fluorescent star polymer, the toxin of protein molecules can be fully exerted, the growth of insects is retarded, or the insects are killed by the toxin.

The invention discloses a solar insecticidal lamp which comprises a lamp body. The lamp body is provided with an attractant coating. A 365-400nm light source is used for the lamp body. Various wave bands are combined together. Double trap manners of simulating smell and ultraviolet light is are adopted according to the invention, so that the types of lured injurious insects lured are greatly increased, in particular insects of lepidoptera, coleoptera and homoptera. The solar insecticidal lamp is simple in structure, green and environment-friendly, and high in luring efficiency, and the types of lured injurious insects lured are increased to the maximum extent.

The invention provides a kieselguhr insecticide, and a preparation method and application thereof. The kieselguhr insecticide comprises the following components in percentage by mass: 80-91 percent of kieselguhr powder, 1.5-3.5 percent of pyrethrum powder and 7.5-16.5 percent of sepiolite powder. The insecticide contains simple components, is high in insecticide efficiency, safe, low in toxicity and low in residue, and is an environment-friendly natural plant insecticide. The insecticide is extremely powerful in lethality to software insects, and can be widely applied to storage of grains and seeds and prevention and treatment of plant diseases and insect pests of crop fruit, vegetable and food production; meanwhile, the insecticide preparation method is simple and is suitable for industrial production.

The invention discloses missible oil containing acetamiprid and lambda-cyhalothrin and an application of the missible oil. The active component of the missible oil comprises a mixture of acetamiprid and lambda-cyhalothrin at the mass ratio of (1-20) to 1. The acetamiprid is compounded with lambda-cyhalothrin to prepare a missible oil preparation. The missible oil has a good synergistic interaction effect; the insecticidal spectrum is expanded; the fast-acting property is improved; the drug resistance is delayed; and the missible oil has a good effect on prevention and treatment of insect pests such as aphids, aleyrodids and red spiders in grain crops, vegetables and fruit trees.

The invention clones insect specific neurotoxin gene BmkIT of East Asian scorpion and insect chitinase gene Chi to an insect cell-converting medium carrier pAcPDIEI to obtain a recombinant plasmid containing divalent anti-insect genes pAcPDIEI-Bmkit-Chi and transfecting the recombinant plasmid and DNA of AcNPV genome together in sfg cells, and obtaining a recombinant rhabdovirus containing divalent anti-insect genes AcNPV-BmKIT-Chi. The cooperation of the insect specific neurotoxin with the chitinase improves the poisoning effect of virus on cotton bollworms and other lepidopteral pests.

The invention discloses an insect-resistant fusion gene and an encoded protein as well as application thereof. The gene comprises a nucleotide sequence of encoding chitin binding protein and a nucleotide sequence of encoding Vip3 toxin in turn from 5' to 3'. The two nucleotide sequences are located in one opening reading frame. Compared with original chitin binding protein and by Vip3 protein, the artificial protein molecule formed by fusing one chitin binding protein and one Vip3 toxin designed by the invention has the advantages that the insecticidal spectrum is wide, various important pests (such as beet armyworm, armyworm and mealywing) in lepidoptera and hemiptera can be simultaneously prevented and controlled and the insecticidal efficiency reaches up to 50%-100%; the combined utilization of the proteins with different functions and other insect-resisting proteins (such as ICPs) is benefited, the insecticidal spectrum is further widened, and the generation of pest resistance is delayed.

The invention discloses a high-lethality gene vATPase B and an application thereof to resisting ladybugs. Through research, a gene vATPase B is obtained from henosepilachna vigintioctopunctata, and when the expression of the gene is silenced, the henosepilachna vigintioctopunctata can be efficiently prevented and treated, so that a target gene dsRNA namely dsvATPase B having high lethal capacity on the henosepilachna vigintioctopunctata is designed, and the target gene dsRNA has high lethality effects on the henosepilachna vigintioctopunctata, is good in sensitivity, high in parasite destroying efficiency, good in preventing and treating effects and convenient to use and operate, also has many advantages of being environmentally-friendly and the like, and has good application prospects inpreventing and treating the henosepilachna vigintioctopunctata.

The invention discloses a henosepilachna vigintioctopunctata high lethal gene and application thereof to controlling henosepilachna vigintioctopunctata. The henosepilachna vigintioctopunctata gene RPL13 is screened out, the high lethal effect can be generated on the henosepilachna vigintioctopunctata by silencing the expression of the gene as the target gene, and therefore the technology capable of efficiently controlling the henosepilachna vigintioctopunctata is developed, that is, the henosepilachna vigintioctopunctata is directly fed with the target gene dsRNA with high lethal capacity, andthe control aim is realized through the lethal effect of the target gene dsRNA on the henosepilachna vigintioctopunctata. The method is convenient to operate, high in effectiveness and sensitivity and high in insect killing efficiency, has the advantages of being friendly to the environment and the like and has quite broad application prospects.

The invention discloses a polynucleotide sequence of optimized coding Androctonus australis neurotoxin polypeptide AaIT. The polynucleotide sequence is suitable for the transcription expression in fungi. The invention also discloses a fungus strain capable of expressing Androctonus australis neurotoxin polypeptide AaIT as well as a preparation used to control insects, wherein the preparation does not do harm to the environment and other animals and plants except insects, thereby belonging to an environment-friendly preparation. The invention also discloses a promoter used to guide the specific expression of target gene in insect hemocoel. The invention combines well the characteristics of fungus cell that fungus cell can infect insects and parasitize in the bodies of insects and the toxicity of insect toxin polypeptide for the first time, thereby greatly increasing the insect killing efficiency of the fungi.

The invention relates to a kidney bean insecticide. The kidney bean insecticide is characterized by mainly comprising the following components by weight: 10-15kg of kadsura root-bark, 8-10 kg of monkshood, 6-8kg of felwort, 8-12kg of rhizoma coptidis, 12-15kg of radix euphorbiae lantu, 15-20kg of croton, 10-15kg of radix stemonae, 15-20kg of radix arnebiae seu lithospermi, 14-18kg of tripterygium glycosides, 4-5kg of toad skin and 0.8-1kg of fipronil. As decoction prepared by decocting traditional Chinese medicines is the main component of the kidney bean insecticide and the fipronil is an adjuvant component of the kidney bean insecticide, the kidney bean insecticide can be used for efficiently killing and preventing pests, and the kill ratio reaches above 95%; and as the most majority of components in the kidney bean insecticide are traditional Chinese medicine components, the kidney bean insecticide is environmentally-friendly and has no pollution to environments and crops. The multiple traditional Chinese medicines are pointedly used in the kidney bean insecticide, so that after the multiple traditional Chinese medicines are combined, the kidney bean insecticide has high pest killing efficiency; the pest killing and preventing effects of the kidney bean insecticide are improved by adding a trace amount of fipronil. The kidney bean insecticide has an ideal effect in the terms of kidney bean pest prevention and treatment.

The invention discloses an insecticidal composition of dinotefuran and bifenthrin and the application thereof. The active components of the medicine are dinotefuran and bifenthrin, and the mass ratio of dinotefuran and bifenthrin is 1-20:1. Dinotefuran and bifenthrin, that pharmaceutical active components of the insecticidal composition of the present invention, belong to two insecticides with different action mechanism, the mixture of the two insecticides does not conflict with each other, the insecticidal spectrum is expanded, the quick-acting property and the persistent property are improved, and the insecticidal efficiency is improved.

The invention discloses an insecticidal fusion protein which comprises IPD072 protein and Vip3 protein. Compared with the previous IPD072 protein and Vip3 protein, the designed artificial protein molecule formed by fusing IPD072 protein and Vip3 toxin has the following advantages: the insecticidal spectrum is broad, multiple important pests (such as laphygma exigua, armyworm and diabrotica virgifera) of lepidoptera and coleoptera can be controlled at the same time, and the insecticidal efficiency is as high as 50-100%; and moreover, the joint utilization of proteins with different functions and other insect-resistant proteins (such as ICPs) is promoted, the insecticidal spectrum is further expanded, and the generation of insect resistance is delayed.

The invention discloses an insect inducing device with a cleaning structure. The insect inducing device comprises a top shell which is composed of a conical tip section and a cylindrical section connected at the lower end of the conical tip section and with the bottom closed, an edge cover is arranged on the outer wall of a position where the conical tip section is connected with the cylindrical section, a rechargeable battery and an electric appliance controller are arranged in the inner wall of the top shell, an insect receiving bucket is arranged below the top shell, and an outer high-voltage power grid is mounted on a closed baseplate of the cylindrical section; a rotating ring is mounted on the lower portion of the outer wall of the cylindrical section in a sleeved manner, inner teethare arranged on the inner wall of the rotating ring, a motor is arranged in the cylindrical section, a gear is mounted at the end of an output shaft of the motor and meshed with the inner teeth of the rotating ring, a downward hairbrush is mounted on the lower end face of the rotating ring, and bristles of the hairbrush contact with the outer wall of the high-voltage power grid. The insect inducing device is novel and reasonable in structural design and high in compactness, solar energy is utilized to generate power to power the rechargeable battery, and insects and other adhesions adhered onthe outer wall when the high-voltage power grid works for a long time are cleaned by driving the hairbrush to rotate through the rotating ring, so that insect inducing and killing efficiency is improved.

The invention relates to a deinsectization device, in particular to a deinsectization device for a municipal park. The technical purpose of providing the deinsectization device thoroughly killing mosquitoes for the municipal park is achieved. The deinsectization device for the municipal park comprises a deinsectization box, a baffle, a lifting rod, a guide sleeve, a mosquito sucking lamp, a spraying mechanism, a pressing plate, a lifting frame, a sliding block and the like; mosquito sucking openings are symmetrically formed in the lower sides of the left wall and the right wall of the deinsectization box, a first motor and the mosquito sucking lamp are installed on the upper side and the lower side of the rear wall in the deinsectization box respectively, the mosquito sucking lamp is located on the same horizontal line with the mosquito sucking openings, a first rotating shaft is connected to the front side of the first motor, and a connecting base is connected to the front side of thefirst rotating shaft. Accordingly, the effect of thoroughly killing the mosquitoes is achieved, the mosquitoes in the deinsectization box cannot escape and can be killed with insecticides slowly, inthe same way, batches of mosquitoes can be thoroughly killed continuously, a power grid bat kills the mosquitoes around the mosquito sucking lamp, the mosquito killing efficiency is improved, and themosquitoes are thoroughly killed.

The invention belongs to a synergic insecticidal composition which is a mixture comprising flubendiamide as a compound (A) and imidacloprid as a compound (B). The insecticidal composition provided by the invention can be processed into an emulsifiable solution, a suspension, a wettable powdery agent and water dispersible granules. In the invention, the weight ratio of the flubendiamide as the compound (A) and the imidacloprid as the compound (B) is (1-100):(1-100). The insecticidal composition provided by the invention has high insecticidal efficiency and can be used for effectively preventing and treating various pests on various crops such as paddy and the like. The insecticidal composition has a higher preventing effect than the single compound (A) or the single compound (B), and the application dosage of each active substance is greatly reduced. The invention not only has an ecological meaning, but also has an important environmental protection meaning.

Provided is a light-luring broad-spectrum multi-layer power grid high-efficiency insecticidal lamp. The light-luring broad-spectrum multi-layer power grid high-efficiency insecticidal lamp comprises a lamp cover, a light-changing pest luring lamp, a pest collecting shell, a base plate, an insecticidal power grid ring and connecting columns, wherein the base plate is fixed to the top of the pest collecting shell, a combination body formed by the base plate and the pest collecting shell is connected with the lamp cover to form a frame through the connecting columns, the light-changing pest luring lamp is installed between the base plate and the lower end of the lamp cover, the insecticidal power grid ring is arranged between the base plate and the lower end face of the lamp cover, the light-changing pest luring lamp is arranged in the insecticidal power grid ring, the insecticidal power grid ring is of a multi-layer spaced distribution structure, and encloses the light-changing pest luring lamp, the number of the distributed layers of the insecticidal power grid ring is larger than or equal to two, the separation distance between a positive electrode wire and a negative electrode wire of the portion, arranged in the inner layer, of the insecticidal power grid ring ranges from 1.5 millimeters to 5 millimeters, the separation distance between a positive electrode wire and a negative electrode wire of the portion, arranged in the outer layer, of the insecticidal power grid ring ranges from 5 millimeters to 10 millimeters, and the light colors of the light-changing pest luring lamp can be selected and set according to the favor of pests to be killed; due to the fact that the multi-layer power grid mode is used for killing the pests, the number of the killed pests is large, and the killing range of the individual pests is wide.

The invention provides a low-toxicity and high-efficiency insecticide for wheat, and relates to the technical field of pesticides. The low-toxicity and high-efficiency insecticide for wheat is prepared from the following raw materials in parts by weight: 80-90 parts of herba artemisiae scoparzae, 10-20 parts of achnatherum inebrians endophytes, 3-5 parts of sodium alkyl benzene sulfonate, 5-10 parts of fenpropathrin, 1-3 parts of cypermethrin, 18-45 parts of pyroligneous, 2-5 parts of captan, 8-10 parts of thiram, 3-5 parts of mancozeb, 20-30 parts of plant extract, 0.5-1 part of manganese sulfate, 15-20 parts of fructus gleditsiae powder, 10-20 parts of herba houttuyniae, 10-12 parts of matrine, 10-15 parts of oxymatrine, 8-10 parts of fructus cnidii extract and 2000-3000 parts of water.The low-toxicity and high-efficiency insecticide for wheat, provided by the invention, has better insecticidal, bactericidal and antibacterial functions, can inhibit reproduction of infectious microbes under low concentration, has anti-bacterial and anti-insect effects, has obvious effects on prevention and treatment of diseases and insect pests of wheat, and has low toxicity and high insecticidalefficiency.

The invention, belonging to a synergistic insecticidal composition, discloses an insecticidal composition comprising a compound (A) indoxacarb and a compound (B) etofenprox. By mixing with proper proportion and using processing technologies of modern pesticide preparations, the insecticidal composition can be prepared into missible oil, suspending agent, wettable powder, water dispersible granules and other conventional pesticide formulations for controlling insects on cotton, fruit tree, vegetable, potato, paddy rice and other crops. The weight ratio of the compound (A) indoxacarb to the compound (B) etofenprox is 1 to 1-50. The insecticidal composition has high insecticidal efficiency, can effectively control the insects on cotton, fruit tree, vegetable, potato, paddy rice and other crops. The control effect of the insecticidal composition is obviously higher than the single used compound (A) or the compound (B), and the dosage of each active substance is greatly reduced. The invention has an ecological significance and an important environmental significance.

The invention discloses a target gene for controlling epilachna vigintioctopunctata and application of the target gene for controlling epilachna vigintioctopunctata. According to the target gene for controlling epilachna vigintioctopunctata and application of the target gene for controlling epilachna vigintioctopunctata, a highly lethal gene Lesswright of epilachna vigintioctopunctata is screenedout, moreover, dsRNA which efficiently silences Lesswright is designed, Lesswright has a strong lethal effect on epilachna vigintioctopunctata, then a technology capable of efficiently controlling epilachna vigintioctopunctata is developed, that is to say, by directly feeding epilachna vigintioctopunctata with the target gene dsRNA which has high capability of causing deaths of epilachna vigintioctopunctata, the control purpose is achieved. The technology is convenient to operate, good in effectiveness and sensibility and high in insecticidal efficiency, has multiple advantages of being environmentally friendly and the like, and has excellent application prospects.

The invention discloses an environment-friendly and degradable insect-sticking board. The environment-friendly and degradable insect-sticking board comprises a baseboard and insect-sticking glue coating at at least one side of the baseboard, wherein the insect-sticking glue is formed by mixing insect-killing primary liquid and insect-sticking glue matrix, the weight ratio of the insect-killing primary liquid to the insect-sticking glue matrix is (1-2):(5:8), the insect-killing primary liquid is prepared from 5-10 parts of fig extracting solution, 2-5 parts of azadirachtin emulsifiable concentrate, 10-20 parts of sophocarpidine aqueous solution, 10-20 parts of organic solvent, 5-10 parts of emulgator and 5-10 parts of stabilizer, and the insect-sticking glue matrix is prepared from 25-50 parts of acaroid resin, 10-20 parts of vegetable oil, 15-25 parts of vaseline, 20-40 parts of polybutylene and 0.1-0.5 part of preservative. By means of the environment-friendly and degradable insect-sticking board, the insect-killing primary liquid is added into the insect-sticking glue, the insect killing efficiency of the insect-sticking board is improved, the service life of the insect-stickingboard is prolonged, the fig extracting solution, the azadirachtin emulsifiable concentrate and the sophocarpidine aqueous solution are all environment-friendly and pollution-free reagents, and play asynthetic effect in the insect-killing effect, the insect-killing effect of the insect-killing primary liquid is greatly improved, and the environment-friendly and degradable insect-sticking board issuitable for being popularized in the field of insect killing.

The invention relates to an insecticidal composition in the field of pesticide compounding, the active ingredients of which are flonicamid and chlorfenapyr, and the weight percentage of the two active ingredients is 1-80:80-1, preferably 5-50 : 60~5; The total mass percentage of active ingredients in the insecticidal composition is 1%~90%, preferably 5%-60%, and the rest are allowed and acceptable auxiliary components in pesticides. The method can be prepared into aqueous emulsion, microemulsion, emulsifiable concentrate, suspending agent, wettable powder, and water-dispersible granule; it can be used to control aphids, whiteflies, Forage insects, bedbugs, cabbage caterpillars, diamondback moths, Spodoptera litura or beet armyworms, thrips, cotton bollworms, Bactrocera dorsalis and other Homoptera and Thysanoptera pests are very effective.

The invention relates to a biological insecticide, belonging to the technical field of preparation of pesticides. The biological insecticide specifically comprises 30-60 parts of humic acid, 5-20 parts of K7 rare earth, 20-40 parts of zeolite powder, 10-30 parts of azone and 1-5 parts of chitosan. The insecticide is natural, safe, broad in insecticidal spectrum and good in using effects; the insecticide is easy to decompose when being used for crops, has no residues and is efficient and environment-friendly; furthermore, the insecticide is stable and long-lasting, and has no drug resistance.

The invention relates to the field of equipment for agricultural planting, particularly an agricultural efficient insecticidal lamp. The lamp mainly consists of a lamp post, a flexible rod, a solar battery plate device arranged on the flexible rod, an energy storage box, a controller, a connecting cross beam and insecticidal lamp devices, wherein the flexible rod is arranged above the lamp post, the controller is arranged on the lamp post, the energy storage box is arranged in the bottom of the lamp post, the connecting cross beam is further arranged on the lamp post relative to the height position of the controller, the connecting cross beam is connected with the plurality of insecticidal lamp devices, and an air-blowing port is further formed above a water tank in each of the insecticidal lamp devices. By adopting the structure, the insecticidal efficiency is improved by combining the water tank and a filter electric power grid. The water level of the water tank in each of the insecticidal lamp devices and the current of the filter power grid can be monitored anytime, so that normal use of the insecticidal lamp is ensured; air is blown by virtue of the air-blowing port, so that the insecticidal efficiency is improved; the growth of crops is better ensured by virtue of a solar battery piece, and the crops are prevented from being threatened by insect pests.